1838218382 has 64 divisors (see below), whose sum is σ = 3739212288. Its totient is φ = 654480000.

The previous prime is 1838218367. The next prime is 1838218391. The reversal of 1838218382 is 2838128381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197657 + ... + 206747.

It is an arithmetic number, because the mean of its divisors is an integer number (58425192).

Almost surely, 2^1838218382 is an apocalyptic number.

1838218382 is an abundant number, since it is smaller than the sum of its proper divisors (1900993906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1838218382 is a wasteful number, since it uses less digits than its factorization.

1838218382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9225.

The product of its digits is 147456, while the sum is 44.

The square root of 1838218382 is about 42874.4490576847. The cubic root of 1838218382 is about 1224.9895058382.

Subtracting 1838218382 from its reverse (2838128381), we obtain a palindrome (999909999).

The spelling of 1838218382 in words is "one billion, eight hundred thirty-eight million, two hundred eighteen thousand, three hundred eighty-two".